I'd shift disciplines, whether it was musical instruments or sports or whatever, and it's the same with that.

There's a huge amount of footage of Julian [ Assange] online, but he's usually in presentation or defending mode, talking about his cause, or the revelations which Wikileaks have brought about. There's none of Assange relaxing or in private mode. There's none of the personality I tried to give him behind closed doors [in The Fifth Estate ].

Our daily lives are so mundane, we get taken over by what is immediately in front of us and we don't see beyond that.

I'm aware of [Doctor Strange] place within the comic pantheon of it all, the Marvelverse, but I don't email saying, "When are we doing next film?" I'm excited to see.

Mads [Mikkelsen] and I have a really epic brawl - a week shoot, lots of rehearsal - and he was just delightful. He's a dancer and a gymnast so he knows how to plant the moves. He was always saying, "Are you okay?" When you've got that level of mutual consideration you form a family very quickly.

It's an interesting arc. You start with a character [Doctor Strange] who's likeable and charming but very arrogant and distant. He's funny but you can see there are massive holes in his life. It's a very painful transition and all that he becomes is tested so quickly and violently.

All the backstories are there but not talked about.